Device of chime communication by amplifying the sound of a music box



Feb. 25, 1969 YlNG-TSAI JUAN 3,429,977

DEVICE OF CHIME COMMUNICATION BY AMPLIFYING THE SOUND OF A MUSIC BOX Filed Dec. 13, 1965 INVENT United States Patent DEVICE OF CHIME COMMUNICATION BY AMPLIFYING THE SOUND OF A MUSIC BOX Ying-Tsai Juan, 460, l-chome, Nakayama-cho,

Ichikawa, Chiba Prefecture, Japan Filed Dec. 13, 1965, Ser. No. 513,188

Claims priority, application Japan, Feb. 24, 1965,

40/ 10,191 US. Cl. 841.14 Int. Cl. Gh 3/02 1 Claim ABSTRACT OF THE DISCLOSURE The present invention relates to a chime communication device by amplifying the sound of a music box.

It is one object of the present invention to provide an amplified chime sound device for a music box which is small in size, low in cost, and yet highly efficient because of a pick-up coil for amplifying the sound of the music box and a transistorized construction. The device is capable of being used not only at home but also in ofiices, stores and factories as a communicating chime. Furthermore, since the device is transistorized and the volume of the sound is capable of being adjusted, it can be used for display, advertisement and as a built-in instrument to obtain favorable sound elfects by connection with various types of switches.

With the above and other objects in view, which will become apparent in the following detailed description, the present invention will be clearly understood in connection with the accompanying drawing, in which the only figure illustrates a circuit and an embodiment of the present invention, including an amplifier A, a motored music box B equipped with a pickup coil, an AC power circuit C and contacts, a DC power source circuit D and contacts which operate simultaneously with the power source and a push-button switch or other type switch E.

Referring now to the drawing, a chime device of the present invention comprises a music box v1 equipped with a motor 2. A pick-up coil 3 for use as a microphone is mounted on reed pins 10.

An amplifier A is provided, comprising circuitry including transistors 19, 19 and 19", a speaker 18 and a volume control 17 connected with the pick-up coil 3 mounted on reed pins 10 for producing a most significant sound effect, and supported by a holder 12.

A drum 6 is operatively connected to tthe motor 2 and revolves in the direction 7. A cam 8, driven by the motor, revolves simultaneously in the same direction and has a projection 9 thereon. Contacts 4 and 5 are provided in a manner such that the contact 4 when connected with AC, and the contacts 4 and 5 and the lever 11 when connected with DC, may be opened or closed by the rotation of the cam 8 and the projection 9, simultaneously.

In the event that AC is to be used as a power source, a circuit C comprising a power source 13, fuse 14, transformer 15 and rectifier 16 is selectively connected with the amplifier A, as well as with a switch 22 provided be- 3,429,977 Patented Feb. 25, 1969 "ice tween the contact 4 and a switch E and the motor 2, as illustrated in the drawing.

When the switch 22 is turned on, the AC source drives the motor 2 which, in turn, drives the drum 6 in the direction 7, and the reed pins 10 produce sound which is amplified by the amplifier A through the pick-up coil 3 mounted on the reed pins. The amplified sound is fed to the speaker 18 for communication of the chimes after being adjusted by means of volume control 17. In the event that the switch 22 is a push-button switch, upon pressing the switch 22, the motor 2' starts to turn and the contact 4, which has been opened by the projection 9 (i.e., in the position illustrated), makes contact with the left-hand contact as the projection 9 rotates, since the projection is released from the left-hand contact. Consequently, the contact 4 is closed and the motor 2 rotates continuously and the music box plays music. When the drum 6 and the cam 8 return to their original position after revolving once, the projection 9 pushes the contact to the left to cut off the AC source from the motor 2. Therefore, the drum comes to a stop after revolving once and the contact for the amplifier is opened simultaneously.

In the case of DC, a battery 20, circuit D of a battery 21 for the power source of the motor and the amplifier A are selectively connected, as well as to the switch 22 at switch E and to the motor 2 via the contacts 4 and 5 as illustrated in the drawing. When the switch 22 is turned on, the drum 6 is driven by the motor 2 in the direction 7, as in the case of AC, and the reed pins produce sound. If the switch 22 is a push-button switch, upon pressing the switch 22 the contact 5 of the amplifier A, which has been opened by the action of the projection 9, as illustrated, separated by the projection 9, even if it is not touched, closes the amplifier circuit. Consequently, the sound is fed to the amplifier A through the pick-up coil mounted on the reed pins and is further fed to the speaker 18 after being adjusted by the volume control 17. Since the contact 4 opens and closes together with the contact 5 and the lever 11, the motor 2 keeps on running until the drum comes back to its original position, as in the case of AC, and the music box plays music until such time when the projection 9 pushes open the contact 5 together with the lever 11 and the contact 4, stopping the motor, the music and the amplifier'circuit A. i

As described hereinbefore, the present device is capable of playing music for any duration of time or for one cycle, and, moreover, the volume can be adjusted at will, and the device is capable of being assembled into any unit size. Therefore, it can be used at any time for any purpose.

I claim:

1. A chime communication device, comprising a music box including,

a motor,

a drum operatively connected rotatably with said motor,

reed pins. adjacent said drum, said drum adapted to produce sound with said reed pins,

a pick-up coil operatively mounted on said reed pins,

an amplifier circuit means for amplifying said sound fed from said pick-up coil and including transistors, a volume control and a speaker,

an AC power source comprising a transformer, and a rectifier,

a battery powered DC source,

a cam operated contact switch having two contacts adapted to be opened and closed,

said AC power source and said DC source selectively References Cited adapted to be operativ ely counled to said motor and UNITED STATES PATENTS to sa1d amplifier ClI'Clllt via sa1d two contacts of sa1d switch respectively Ranger a camt heufling a prgjection ct peratively tgonneictctled to saig 5 FOREIGN PATENTS mo or or sync ronous urnlng w1 sa1 rum an l operating said Contact Switch, 294,724- 10/1951 Switzerland.

a switch rneans operatively connected to said motor ARTHUR GAUSS, Primary Examiner.

for starting said device, and said cam operated contact switch including a lever 10 DAVIS, Assistant Examinermeans operatively mounted on one of said contacts for gauging said two contacts into simultaneous opening and closing operation by said cam. 

